Canada-wide gas boiler information · On-site service in Greater Vancouver, BC
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NTI Boilers · Series
The Trinity TFTN is NTI's next-generation flagship boiler line: wall-hung condensing models from the TFTN085 to the TFTN399 with a full-colour touchscreen, built-in Wi-Fi, low-water cut-off and zone control, with floor-mounted TFTN500–850 sizes in the same family. Boilers.ca documents the wall-hung 085–399 and the floor-mounted 500–850 sizes as model records.
Series facts
96% AFUE on the TFTN085, 95% on the 110 / 150 / 199 / 285, and 95.4% thermal efficiency on the 340 and 399 (per the NTI product page).
NTI positions the TFTN as the next generation of its flagship TFT line, built on the same platform with a redesigned touchscreen control. The wall-hung models run from the TFTN085 to the TFTN399 — inputs of 8.5–85 through 39.9–399 MBH — with a full-colour graphics display, remote monitoring and diagnostics over Wi-Fi, a built-in low-water cut-off, a 120V convenience outlet and built-in control for up to three heating zones plus DHW.
The page's wall-mount spec table lists efficiency as 96% AFUE on the TFTN085, 95% on the 110 through 285, and 95.4% thermal efficiency on the TFTN340 and TFTN399, whose published rating is thermal rather than AFUE. Weights run from 107 lb (with water) on the 085 to 250 lb on the 340 and 399, and the water connections step from 1 1/4" NPT up to 1 1/2" NPT on the two largest wall models.
The same product page lists the floor-mounted TFTN500, TFTN600, TFTN725 and TFTN850 (50–500 through 85–850 MBH input) for larger plants. Boilers.ca documents all four floor sizes as model records beside the wall-hung 085–399 models; NTI covers them in the separate TFTN500–850 I&O manual (99987545), and rates them by thermal efficiency (98% down to 97.6%) rather than AFUE.
Highlights
Models
One canonical page per model with input, output and efficiency kept separate.
NTI Boilers
The NTI Trinity TFTN085 is the smallest wall-hung TFTN: 8.5 to 85 MBH input, the only TFTN wall model rated 96% AFUE, weighing 107 lb with water and standing 34 1/8 inches tall with a 2" venting option to 100 ft.
NTI Boilers
The NTI Trinity TFTN110 is the 95% AFUE wall-hung TFTN between the 085 and the 150: 11 to 110 MBH input in the same 107 lb cabinet as the TFTN085, with 2" venting to 100 ft or 3" to 150 ft.
NTI Boilers
The NTI Trinity TFTN150 is the 95% AFUE wall-hung TFTN for mid-to-larger homes: 15 to 150 MBH input, 122 lb with water, on 1 1/4" NPT CH connections with 2" venting to 100 ft or 3" to 150 ft.
NTI Boilers
The NTI Trinity TFTN199 is the 95% AFUE wall-hung TFTN at the classic 199 MBH mark: 19.9 to 199 MBH input, 140 lb with water, still on 1 1/4" NPT CH connections with 2" venting to 100 ft or 3" to 150 ft.
NTI Boilers
The NTI Trinity TFTN285 is the 95% AFUE wall-hung TFTN for big houses and light-commercial plants: 28.5 to 285 MBH input, 180 lb with water, in a wider 21 3/8 inch cabinet with 3"-only venting to 150 ft.
NTI Boilers
The NTI Trinity TFTN340 is the first of the two largest TFTN wall models: 39.9 to 340 MBH input, rated 95.4% thermal efficiency rather than AFUE, at 250 lb with water in a 25 1/4 inch-wide cabinet with 4" venting to 150 ft.
NTI Boilers
The NTI Trinity TFTN399 is the largest TFTN wall model: 39.9 to 399 MBH input at 95.4% thermal efficiency, 250 lb with water, on 1 1/2" NPT CH connections with 4" venting to 150 ft — the wall-hung option NTI positions against its floor-mounted 500–850 sizes.
NTI Boilers
The NTI Trinity TFTN500 is the smallest floor-mounted TFTN: 50 to 500 MBH input at 98% thermal efficiency, with a 489 MBH heating capacity and a 425 MBH Net AHRI rating, weighing 575 lb with water on 2" NPT water connections with 4" venting to 150 ft.
NTI Boilers
The NTI Trinity TFTN600 lifts the floor-mounted TFTN to a 600 MBH ceiling: 60 to 600 MBH input at 97.8% thermal efficiency, a 585 MBH heating capacity and a 509 MBH Net AHRI rating, sharing the 575 lb with-water weight and 2" water connections of the TFTN500.
NTI Boilers
The NTI Trinity TFTN725 is the second-largest floor-mounted TFTN: 72.5 to 725 MBH input at 97.7% thermal efficiency, a 705 MBH heating capacity and a 613 MBH Net AHRI rating, stepping to 685 lb with water, 2 1/2" NPT water connections and 6" venting.
NTI Boilers
The NTI Trinity TFTN850 is the largest floor-mounted TFTN: 85 to 850 MBH input at 97.6% thermal efficiency, with an 825 MBH heating capacity and a 717 MBH Net AHRI rating, weighing 690 lb with water on 2 1/2" NPT water connections with 6" venting.
| Specification | NTI Trinity TFTN085 | NTI Trinity TFTN110 | NTI Trinity TFTN150 | NTI Trinity TFTN199 | NTI Trinity TFTN285 | NTI Trinity TFTN340 | NTI Trinity TFTN399 | NTI Trinity TFTN500 | NTI Trinity TFTN600 | NTI Trinity TFTN725 | NTI Trinity TFTN850 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Input, minimum | 8.5 MBH | 11 MBH | 15 MBH | 19.9 MBH | 28.5 MBH | 39.9 MBH | 39.9 MBH | 50 MBH | 60 MBH | 72.5 MBH | 85 MBH |
| Input, maximum | 85 MBH | 110 MBH | 150 MBH | 199 MBH | 285 MBH | 340 MBH | 399 MBH | 500 MBH | 600 MBH | 725 MBH | 850 MBH |
| output-max | — | — | — | — | — | — | — | — | — | — | — |
| Efficiency (AFUE) | 96 % | 95 % | 95 % | 95 % | 95 % | — | — | — | — | — | — |
| turndown | — | — | — | — | — | — | — | — | — | — | — |
| Max. equivalent vent length | 150 ft | 150 ft | 150 ft | 150 ft | 150 ft | 150 ft | 150 ft | — | — | — | — |
| Max. equivalent vent length, 2" | 100 ft | 100 ft | 100 ft | 100 ft | — | — | — | — | — | — | — |
| Weight | 107 lb | 107 lb | 122 lb | 140 lb | 180 lb | 250 lb | 250 lb | 575 lb | 575 lb | 685 lb | 690 lb |
Read the full comparison: NTI Trinity TFTN085 vs TFTN110 →
Read the full comparison: NTI Trinity TFTN110 vs TFTN150 →
Read the full comparison: NTI Trinity TFTN150 vs TFTN199 →
Read the full comparison: NTI Trinity TFTN199 vs TFTN285 →
Read the full comparison: NTI Trinity TFTN285 vs TFTN340 →
Read the full comparison: NTI Trinity TFTN340 vs TFTN399 →
Read the full comparison: NTI Trinity TFTN500 vs TFTN600 →
Read the full comparison: NTI Trinity TFTN600 vs TFTN725 →
Read the full comparison: NTI Trinity TFTN725 vs TFTN850 →
Read the full comparison: IBC SL 30-199 G3 vs NTI Trinity TFTN199 →
Read the full comparison: Navien NFB-200H vs NTI Trinity TFTN199 →
Read the full comparison: NTI Trinity TFTN150 vs Weil-McLain ECO Tec 150-H →
Error codes and alerts
Manuals
Where ROMA provides on-site service
On-site service is currently offered in Greater Vancouver, BC, including Vancouver, Burnaby, Richmond, Surrey, Coquitlam, North Vancouver, West Vancouver, New Westminster, Port Coquitlam, Port Moody, Delta, Langley, Maple Ridge, Abbotsford, Chilliwack, White Rock, Pitt Meadows, Tsawwassen, Anmore, Lions Bay, Belcarra, Bowen Island, Mission. Everything else on this site is reference information you can use anywhere in Canada.
Services for NTI Boilers boilers
The TFT is the earlier NTI line and is listed as discontinued. NTI says the TFTN is built on the same platform as the TFT with a redesigned, easier control, onboard Wi-Fi and touchscreen.
The TFTN family includes floor-mounted TFTN500, TFTN600, TFTN725 and TFTN850 models documented in the separate 500–850 manual (99987545), sold for commercial applications. Boilers.ca documents the wall-hung 085–399 and the floor-mounted 500–850 sizes as separate model records.
NTI publishes 95.4% thermal efficiency for the TFTN340 and TFTN399 in the AFUE/thermal-efficiency column of its product page. The 085 is rated 96% AFUE and the 110 through 285 models 95%.
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On-site service in Greater Vancouver, BC. ROMA lists “Open 7 days” on its site; call to confirm same-day availability.
Sources and verification
Facts checked September 7, 2026. Last updated September 8, 2026. Technical reviewer: not yet assigned.